Mitsubishi Pencil UMNSP38.38 Gel Ballpoint Pen Uni-Ball One P 0.38 Orange

She's gorgeous and I love her. Yes, her.The writing is smooth and the grip is comfortable and ergonomic, the pen is lightweight and beautiful. Maybe not ideal for people who have big hands (it's pretty small!) or for those who have very small handwriting (it's not a fine tip!) but for me, it's perfect. Worth every penny.

Love this pen and how smoothly it writes even though the tip is very fine - I use for journaling and the thickness of the pen doesn't bother me at all. It is very easy to use and I like the color options!

Very happy with this pen, for the price. It feels much better in my hand than the disposable pens I'm accustomed to. The parts join together very well, and it gives the impression of being seamless. The sprung paperclip is a nice touch and feels good.I've tried this .38 as well as the uniball .28. I like both, but I prefer the .38 because it is impressively fine, yet has an acceptably smooth texture. The .28 is outrageously fine and very useful for details and tiny notes, but that gives it a rough writing texture and a delicate resistance that makes it feel like a bit too much for everyday writing. I like to use this pen for normal writing, and the .28 for filling forms and things like that.

The early One pens from '21-'22 would skip and railroad excessively, offsetting any gains from the darker look the pigmentation was intended for. The One F was an improvement over the original One which looked streamlined, felt fine to use, and wrote dark lines. The F wrote more consistently and had more weight in the front, where the one was more evenly distributed. Like the One F, the One P is built with a metal front tip and a smooth barrel. There is no grippy section in the front, unlike the original One. The One P certainly is pocket-sized, as intended. This may be a problem for the largest hands, but the barrel isn't slippery. It is threaded together in the middle and the ink cartridge is almost the entire length of the pen. I received a 2024 cartridge and have had no problems with the ink flow in the 0.5mm size. It does look very slightly darker than the smaller 0.38mm ink cartridge. Overall, I'm surprised the '24 model is writing so much better than the early One inks. Most likely, a reformulation occurred even after the early run of One P. The pocket clip is strong, but may not be tight enough for retention through constant leaning forward. The only thing left to improve after making sure the new ink is consistent across the models is maybe a deeper carry pocket clip. This would probably require a redesign to avoid looking like the original Zebra Sarasa Grand, where the clip was could interfere with the nock operation.

Absolutely love this little pen!! It took a minutes to get comfortable in my hand because it’s short and stubby but it’s my favorite pen - also got the .5 in another color and the combo is everything! I use it in my common planner which has the Tomoe river paper and does not bleed through. The ink is black black!!! Writes smooth very thin line and no skipping! Can smear if run over too quick or on certain types of paper, but on the tomoe paper it dries after a second or two and smearing doesn't impact me too much. Will smear with a highlighter or marker over top.

I tried the Mitsubishi Pencil UMNSP05.28 Gel Ballpoint Pen Uni-Ball One P 0.5 in Banana and was charmed by its cute design and high-quality build. The ink flows smoothly, and the pen overall feels sturdy—a pleasure to write with.However, one surprising aspect was the pen's length, which is shorter than I expected. This shorter design does seem to increase stability and control, making it very comfortable to use for extended periods. I have average-sized hands for a woman of my height (5'3"), and it fits nicely in my grip. However, for those with larger or wider hands, this might pose a challenge, as the compact size could be less comfortable.Overall, it’s a great pen, especially if you value aesthetics and writing precision and your hand size suits a smaller pen.

It's short and comfortable. Being a very fine point it is very scratchy and isn't for all papers or heavy handed writers. The ink flow is on the dry side so with the fine point you get a lot of bad lines at speed. The clip while innovative doesn't have the grip tension to stay in pocket. That's a major problem. The Jetstream RT fills this pen's niche better if less stylishly.

I have small to medium hands, so the size and length of the pen felt better in my hands and prevented some fatigue. The ink does not smear as it dries pretty quickly. I felt that the ink was sharp but soft than you might usually see with other pens. Sometimes the ink would skip but that was only if I was applying too much pressure as I was writing with it. That turned out to be helpful for me as I am someone who has a tendency to put too much pressure. I would say that value for the money depends on what you are looking for in a pen and how it works for you personally. I found the colors aesthetically pleasing and I was a fan of the shape/size. I also liked the clip attachment.